Medical News Today -- A physician at St. Joseph’s Hospital and Medical Center in Phoenix, Wilber Su, MD, is the first physician in the Southwest to offer the Arctic Front® Cardiac CryoAblation Catheter system to treat paroxysmal atrial fibrillation (PAF), a serious heart rhythm disorder that affects millions of Americans. Recently approved by the U.S. Food and Drug Administration (FDA), this is the first and only cryoballoon in the United States used to treat this condition.